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WO1999023780A1 - Procede et appareil pour corriger une erreur de rythme dans un systeme de donnees echantillonnees - Google Patents

Procede et appareil pour corriger une erreur de rythme dans un systeme de donnees echantillonnees Download PDF

Info

Publication number
WO1999023780A1
WO1999023780A1 PCT/GB1998/003291 GB9803291W WO9923780A1 WO 1999023780 A1 WO1999023780 A1 WO 1999023780A1 GB 9803291 W GB9803291 W GB 9803291W WO 9923780 A1 WO9923780 A1 WO 9923780A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
receiver
filter
sampled
timing error
Prior art date
Application number
PCT/GB1998/003291
Other languages
English (en)
Inventor
Paul George Turner
Steven Anthony Meade
Original Assignee
Wireless Systems International Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wireless Systems International Limited filed Critical Wireless Systems International Limited
Publication of WO1999023780A1 publication Critical patent/WO1999023780A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/042—Detectors therefor, e.g. correlators, state machines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
    • H04L25/03133—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals with a non-recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0036—Correction of carrier offset using a recovered symbol clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0046—Open loops
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
    • H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
    • H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal

Definitions

  • phase I component and a ⁇ /2 out of phase Q component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Les données échantillonnées par un récepteur fonctionnant à l'intérieur d'un système de transmission de données numériques sont traitées par un filtre passe-bas numérique, présentant plusieurs coefficients de filtrage. On peut récupérer une erreur de rythme d'échantillonnage à partir des données ainsi traitées pour ajuster les différents coefficients de filtrage dudit filtre, et ainsi corriger les erreurs de rythme.
PCT/GB1998/003291 1997-11-03 1998-11-03 Procede et appareil pour corriger une erreur de rythme dans un systeme de donnees echantillonnees WO1999023780A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9723216.9A GB9723216D0 (en) 1997-11-03 1997-11-03 Method of and apparatus for correcting a timing error in a sampled data system
GB9723216.9 1997-11-03

Publications (1)

Publication Number Publication Date
WO1999023780A1 true WO1999023780A1 (fr) 1999-05-14

Family

ID=10821508

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1998/003291 WO1999023780A1 (fr) 1997-11-03 1998-11-03 Procede et appareil pour corriger une erreur de rythme dans un systeme de donnees echantillonnees

Country Status (3)

Country Link
FR (1) FR2770710A1 (fr)
GB (2) GB9723216D0 (fr)
WO (1) WO1999023780A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7039128B2 (en) 1999-12-02 2006-05-02 Tellabs Oy Method and arrangement for synchronizing a receiver to a quadrature amplitude modulated signal

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003045026A1 (fr) * 2001-11-20 2003-05-30 Sanyo Electric Co., Ltd. Recepteur radio et procede et programme de commande de rythme de symboles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283811A (en) * 1991-09-03 1994-02-01 General Electric Company Decision feedback equalization for digital cellular radio
US5517524A (en) * 1993-03-01 1996-05-14 Sony Corporation Method of and apparatus for automatic equalizing filter
WO1996034481A2 (fr) * 1995-04-28 1996-10-31 Ionica International Limited Filtre adaptatif a utiliser dans un recepteur mrt/amrt

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706314A (en) * 1995-01-04 1998-01-06 Hughes Electronics Joint maximum likelihood channel and timing error estimation
US5694440A (en) * 1996-01-02 1997-12-02 Motorola, Inc. Data synchronizer lock detector and method of operation thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283811A (en) * 1991-09-03 1994-02-01 General Electric Company Decision feedback equalization for digital cellular radio
US5517524A (en) * 1993-03-01 1996-05-14 Sony Corporation Method of and apparatus for automatic equalizing filter
WO1996034481A2 (fr) * 1995-04-28 1996-10-31 Ionica International Limited Filtre adaptatif a utiliser dans un recepteur mrt/amrt

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CLASSEN F ET AL: "AN ALL FEEDFORWARD SYNCHRONIZATION UNIT FOR DIGITAL RADIO", PERSONAL COMMUNICATION - FREEDOM THROUGH WIRELESS TECHNOLOGY, SECAUCUS, NJ., MAY 18 - 20, 1993, no. CONF. 43, 18 May 1993 (1993-05-18), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 738 - 741, XP000393288 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7039128B2 (en) 1999-12-02 2006-05-02 Tellabs Oy Method and arrangement for synchronizing a receiver to a quadrature amplitude modulated signal

Also Published As

Publication number Publication date
GB2333212A (en) 1999-07-14
GB2333212B (en) 2003-06-04
FR2770710A1 (fr) 1999-05-07
GB9824039D0 (en) 1998-12-30
GB9723216D0 (en) 1998-01-07

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